According to Jane Lee of MLB.com, Athletics manager Bob Melvin said yesterday that Ryan Cook could be shut down from throwing for a couple of weeks due to right shoulder inflammation.

It would be better if there was no issue at all, but Melvin remains optimistic that Cook will have enough time to be ready for Opening Day. He threw six or seven bullpens coming into camp, so the hope is that he won’t have much trouble catching up with the rest of the relievers. As opposed to a starter who needs to get stretched out, Cook will only need to make a handful of brief appearances before the season.

Cook has been an important part of Oakland’s bullpen over the past two seasons, posting a 2.54 ERA in 142 appearances while averaging 9.4 K/9. Only 13 pitchers have appeared in more games during that timespan.